Bug Description

With current behavior:

- Assume user has Firefox window active, and has a couple of applications running in system panel.
- User presses 'Alt' and enters text "pref"
- Auto-complete list shows four choices, from different applications. First choice is in focus, and a small app icon appears where the dash normally is, indicating which application the option belongs to.
- User presses keyboard down arrow. Focus moves down to next auto-complete choice, and "dash" icon changes to the icon for that app. There is no confusion about which application you are about to interface with.

Problem:

If user wants to use mouse, it is unclear which applications own the auto-complete suggestions beyond the first in the list. User cannot discover which application owned the action in the HUD auto-complete list until after he clicks it. A screenshot is attached showing the problem (which applications own the two "> Preferences" entries?).

Solution:

Update the auto-complete suggestion list focus on mouse-over. This way, when the user goes to click an entry, the focus will change to where user's mouse is pointed, and the "dash" icon will update to the icon of the application that owns the entry. The user will know which application he is about to act upon.